Measurement of aerosol size distribution by impaction and sedimentation An experimental study and data reduction
Description
This study concerns essentially solid aerosols produced by combustion and more particulary the aerosol liberated by a sodium fire taken into account in safety studies related to sodium cooled nuclear reactors. The accurate determination of the aerosol size distribution depends on the selection device use. An experimental study of the parameters affecting the solid aerosol collection efficiency was made with the Andersen Mark II cascade impactor (blow off and bounce, electrical charge of particles, wall-loss). A sedimentation chamber was built and calibrated for the range between 4 and 10 μm. The second part describes a comparative study of different data reduction methods for the impactor and a new method for setting up the aerosol size distribution with data obtained by the sedimentation chamber
Availability note (English)
MF available from INIS under the Report Number.Abstract (French)
Cette etude concerne essentiellement les aerosols solides produits par combustion, en partucilier l'aerosol produit par un feu de sodium qui intervient dans les etudes de surete liees aux accidents de surgenerateurs nucleaires. La determination precise de la distribution d'un aerosol depend essentiellement de l'appareil de selection utilise. Une etude experimentale des phenomenes influant sur l'efficacite de collection des particules d'un aerosol solide par methode inertielle (reentrainement, charge electrique des particules, pertes sur les parois) a ete effectuee avec l'impacteur en cascade Andersen Mark II. Une chambre de sedimentation concue pour le domaine de 4 a 10 μm a ete etalonnee. En deuxieme partie, on presente une etude comparative des differentes methodes de traitement des donnees recueillies par l'impacteur et une methode de simulation originale pour etablir la granulometrie d'un aerosol a partir des donnees obtenues par la chambre de sedimentationFiles
13674981.pdf
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Additional details
Additional titles
- Original title (French)
- Mesure de la granulometrie d'aerosols par impaction et par sedimentation - Etude experimentale et traitement des donnees
Publishing Information
- Imprint Pagination
- 88 p.
- Report number
- CEA-R--5135
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 13674981
- Subject category
- S61: RADIATION PROTECTION AND DOSIMETRY;
- Descriptors DEI
- AEROSOLS; AIR SAMPLERS; CALIBRATION; CASCADE IMPACTORS; DATA PROCESSING; DIFFUSION; FIRES; MEASURING METHODS; PARTICLE SIZE; PERFORMANCE; SEDIMENTATION; SODIUM
- Descriptors DEC
- ALKALI METALS; COLLOIDS; DISPERSIONS; ELEMENTS; LABORATORY EQUIPMENT; METALS; SAMPLERS; SIZE; SOLS